The invention discloses an intelligent heat supply network integrated system and a control method of the intelligent heat supply network integrated system and relates to a city heating system and a control method of the city heating system. The system comprises a heat source, a heat supply dispatch initial station, a heat exchange station, a primary heat supply pipe network, a secondary heat supply pipe network and a building heat supply pipe network, a main control system, a primary controller, a secondary controller and a building controller are arranged, each stage of heat supply pipe network is provided with a heat meter, a pressure sensor, a temperature sensor and an electric adjusting valve, a circulation pump on the primary network and a circulation pump on the secondary network are respectively provided with a frequency converter, and the building controller, the primary controller and the secondary controller are connected with the main control system; the building controller is electrically connected with the electric adjusting valve of the building heat supply pipe network. The main control system obtains control parameters through the sensors on all the stages of pipe networks, and the working states of the heat supply pipe networks are adjusted and controlled according to the specific values between the parameters and designed values. According to the intelligent heat supply network integrated system, heat and water balance of the heat supply pipe networks is optimally controlled, no utilizable energy is wasted, and the intelligent heat supply network integrated system is green, capable of saving energy, environmentally friendly and beneficial for descendants.